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US20130059398A1 - Use of novel materials in marker systems - Google Patents

Use of novel materials in marker systems Download PDF

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Publication number
US20130059398A1
US20130059398A1 US13/578,052 US201113578052A US2013059398A1 US 20130059398 A1 US20130059398 A1 US 20130059398A1 US 201113578052 A US201113578052 A US 201113578052A US 2013059398 A1 US2013059398 A1 US 2013059398A1
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US
United States
Prior art keywords
marker
emission
item
stimulus
authenticity
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US13/578,052
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English (en)
Inventor
Michael Cleary
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Detertech Holdings Ltd
Original Assignee
Smartwater Research Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Smartwater Research Ltd filed Critical Smartwater Research Ltd
Assigned to SMARTWATER RESEARCH LIMITED reassignment SMARTWATER RESEARCH LIMITED ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CLEARY, MICHAEL
Publication of US20130059398A1 publication Critical patent/US20130059398A1/en
Abandoned legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/22—Luminous paints
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
    • G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
    • G01N21/64—Fluorescence; Phosphorescence

Definitions

  • the present invention relates to improvements in or relating to marker systems for the security and tracing of items, articles, goods, vehicles or persons.
  • marker systems have been particularly useful in preventing crime and for tracking and identifying the authenticity of items.
  • Such marker systems as have been developed by the applicant for many years, have found particular application in the fields of security, counterfeiting and preventing crime.
  • the interested reader is referred to, amongst others, WO 93/07233, GB 2369078, GB 2410208 and GB 2413675.
  • Analysis of the surface onto which the marker system is placed or deployed can provide a reliable method of tracing or authenticating items, articles, goods, vehicles or persons.
  • An important feature of a marker system is its stability under varying conditions. These conditions can involve excesses due to weather or chemical assault and deliberate attempts to remove the marker from marked items.
  • marker systems can have three different “levels” of coding, and these are:
  • the key initial feature is the visual indication of the marked area. This is given by a visual mark or covertly through the use of an indicator that requires stimulation before providing a visible emission.
  • fluorescent materials such as optical brighteners or whitening agents have been used that are covert, but emit a white or blue white colour under ultraviolet light. However these can be confused with natural materials that also fluoresce in the same manner.
  • the present invention improves the stability of these covert indicators when used in security markers.
  • Indicators which exhibit a greater stability, and exhibit different coloured fluorescent emissions, provide an improved marker system having second level coding information.
  • UV light ultraviolet light
  • infrared light are well known.
  • Other forms of stimulation are available, such as chemical, thermal or electrical stimulus, which are able to produce a visible indication or emission on the marked area.
  • the formulation in which these materials are used provides further enhancements of their stability.
  • a further enhancement in addition to greater stability, lies in the fact that the materials emit at specific intense wavelengths, some in the visible, some in the near infrared, to provide coding information.
  • This type of information can be used by manufacturers to covertly identify simple features that are nonetheless crucial to product control, e.g. which plant has been used to manufacture an item.
  • a covert marker for applying to the surfaces of items, articles, goods, vehicles and/or premises, said marker comprising at least one fluorescent material or indicator capable of fluorescing at a specific wavelength when subjected to stimulus.
  • Said marker may also further comprise at least one phosphorescent material or indicator capable of phosphorescing at a specific wavelength when subjected to ultraviolet stimulus. Further preferably, said marker may also further comprise at least one infrared emitting material or indicator capable of emitting light at a specific infrared frequency when subjected to stimulus.
  • said marker also includes ultraviolet inhibitors. Further preferably, said marker is provided as a composition that includes a thickening agent.
  • said materials are based upon emitters that are provided in the solid state as a suspension.
  • said materials have a high inherent stability that are resistant to environmental conditions and/or removal through washing or abrasion.
  • the step of comparing the observed fluorescence and/or phosphorescent emission from either ultraviolet or infrared absorption against corresponding colour responses to verify the authenticity of the item is made using a simple look-up table showing what the colour output should be for the case in hand.
  • the method also may include the step of initially locating the marker by the use of an ultraviolet torch or an infrared torch.
  • the stimulus can be selected from a group including optical, chemical, thermal or electrical or combinations thereof.
  • the step of comparing the observed fluorescence and/or phosphorescent emission against corresponding colour responses to verify the authenticity of the item is made using a simple look-up table showing what the colour output should be for the case in hand.
  • the method also may include the step of initially locating the marker by the use of suitable stimulation.
  • the advantages of the present invention are that a marker system is provided based upon new covert indicators with a high inherent stability that also provides novel optical effects when subjected to different forms of illumination or stimulation.
  • the formulation in which these materials are used provides further enhancements of their stability.
  • the marker system using such materials or indicators providing a second level of coding by providing simple colour combinations in response to various stimulus, and from which simple quick information can be obtained.
  • FIG. 1 illustrates the long term stability of the materials or indicators used in the present invention under accelerated aging conditions
  • FIG. 2 shows the spectra obtained from the types of materials or indicators used in the present invention.
  • FIG. 3 shows further stability data obtained from the materials or indicators used in the present invention under accelerated aging conditions.
  • the present invention involves the development of marker systems that have high stability and can firstly emit fluorescence at a specific wavelength. Further they may then phosphoresce at the same or a different colour when subjected to further stimulation.
  • second level coding information In terms of second level coding information, the variables available allow a good level of coding that can be observed and discriminated on the spot by relatively untrained operatives, requiring only simple and short training, through the use of simple torch like devices. Currently five different fluorescent colours from UV absorption are available that can be distinguished visually. Two different phosphorescent colours are available and five different coloured fluorescent emissions from infrared up conversion. These variables can be combined to provide a level of complexity far beyond anything currently available as second level coding information.
  • the materials are based upon emitters that are present in the solid state as suspensions. Their existence in the solid phase enhances their stability, over materials in solution, to both environmental conditions and their resistance to removal through washing or abrasion.
  • the stability of the fluorescent materials can be further enhanced by the addition of UV inhibitors to the final formulation.
  • An example formulation would comprise the following materials with the amounts shown dispersed into a suitable medium:
  • Ciba LS260 an aqueous acrylic emulsion, has been found a suitable medium for this purpose. Thickeners may be used if required to preserve the suspension.
  • the product may then be applied either automatically in a covert layer to items on a production line or manually, if required.
  • the mark can then be found typically by the use of a simple UV torch emitting at 365 nm and/or an IR torch emitting at 980 nm, both of which are now readily available, or some other form of stimulation.
  • FIG. 1 shows loss of fluorescent emission over time under accelerated aging conditions. It compares the stability of a typical optical brightener compared with that of an indicator contained in a formulation of the present invention.
  • the optical brightener loses all fluorescent output after just 1 day, whereas the indicator and formulation retains at least 1/7 th of its fluorescent output for a period in excess of 160 such days.
  • FIG. 2 show examples of the emission spectra obtained from the types of materials used in the present invention:
  • UV 6 shows an indicator with a blue emission under UV light
  • UV 2 shows an indicator with a green emission under UV light
  • UV 3 shows an indicator with an orange emission under UV light
  • UV 4 shows an indicator with a red emission under UV light
  • FIG. 3 shows further stability data and shows the emission at the Amax of each emission, again when subjected to accelerated aging conditions, i.e. continuous days of mid-day Florida sunshine.

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Materials Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Wood Science & Technology (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Physics & Mathematics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Biochemistry (AREA)
  • Analytical Chemistry (AREA)
  • Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
  • Laminated Bodies (AREA)
  • Luminescent Compositions (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
US13/578,052 2010-02-10 2011-02-09 Use of novel materials in marker systems Abandoned US20130059398A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB1002233A GB2477741A (en) 2010-02-10 2010-02-10 Fluorescent materials used in marker systems
GB1002233.3 2010-02-10
PCT/GB2011/050231 WO2011098804A1 (en) 2010-02-10 2011-02-09 Use of novel materials in marker systems

Publications (1)

Publication Number Publication Date
US20130059398A1 true US20130059398A1 (en) 2013-03-07

Family

ID=42110500

Family Applications (1)

Application Number Title Priority Date Filing Date
US13/578,052 Abandoned US20130059398A1 (en) 2010-02-10 2011-02-09 Use of novel materials in marker systems

Country Status (7)

Country Link
US (1) US20130059398A1 (es)
EP (1) EP2534210A1 (es)
AR (1) AR076888A1 (es)
CA (1) CA2789526A1 (es)
GB (1) GB2477741A (es)
UY (1) UY32653A (es)
WO (1) WO2011098804A1 (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT202000012274A1 (it) * 2020-05-25 2021-11-25 Caffitaly System Spa Sistema per la preparazione di bevande

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITUA20163400A1 (it) 2016-05-12 2017-11-12 Alberto Rolla Sistema di riconoscimento ottico di capsule per la produzione di bevande calde

Citations (3)

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WO2003029340A2 (en) * 2001-09-27 2003-04-10 Clariant International Ltd. Fluorescent pigment composition
US20030112423A1 (en) * 2000-04-24 2003-06-19 Rakesh Vig On-line verification of an authentication mark applied to products or product packaging
US20050243305A1 (en) * 2002-08-05 2005-11-03 Rakesh Vig Tamper-resistant authentication mark for use in product or product packaging authentication

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GB9014339D0 (en) 1990-06-27 1990-08-15 Cleary Michael Improvements in or relating to security of articles or premises
JPH08208976A (ja) * 1994-10-31 1996-08-13 Dainippon Ink & Chem Inc 蛍光顔料及び／又は蛍光染料を含むマイクロビーズ
GB9614261D0 (en) * 1996-07-06 1996-09-04 Secr Defence A covert mark and security marking system
US6297508B1 (en) * 1998-08-10 2001-10-02 Cryovac Inc. Method of determining authenticity of a packaged product
US6274873B1 (en) * 1998-11-18 2001-08-14 Dna Technologies Inc. Spectrum analyzer for reading authentication marks
GB0027938D0 (en) 2000-11-16 2001-01-03 Smartwater Ltd Improvements in or relating to particle production
US6730918B2 (en) * 2001-12-20 2004-05-04 General Electric Company Apparatus for determining past-service conditions and remaining life of thermal barrier coatings and components having such coatings
WO2003105075A1 (en) * 2002-06-07 2003-12-18 Trustees Of Boston University System and methods for product and document authentication
US7488954B2 (en) * 2003-06-26 2009-02-10 Ncr Corporation Security markers for marking a person or property
US7800088B2 (en) * 2003-06-26 2010-09-21 Ncr Corporation Security markers for identifying a source of a substance
US20050029437A1 (en) * 2003-08-08 2005-02-10 Akira Hasegawa Capsule optical sensor
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WO2003029340A2 (en) * 2001-09-27 2003-04-10 Clariant International Ltd. Fluorescent pigment composition
US20050243305A1 (en) * 2002-08-05 2005-11-03 Rakesh Vig Tamper-resistant authentication mark for use in product or product packaging authentication

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Title
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT202000012274A1 (it) * 2020-05-25 2021-11-25 Caffitaly System Spa Sistema per la preparazione di bevande
WO2021240310A1 (en) * 2020-05-25 2021-12-02 Caffitaly System S.P.A. System for making beverages
CN115884701A (zh) * 2020-05-25 2023-03-31 卡菲塔利系统股份有限公司 用于制作饮料的系统

Also Published As

Publication number Publication date
GB201002233D0 (en) 2010-03-31
GB2477741A (en) 2011-08-17
EP2534210A1 (en) 2012-12-19
AR076888A1 (es) 2011-07-13
CA2789526A1 (en) 2011-08-18
UY32653A (es) 2011-07-29
WO2011098804A1 (en) 2011-08-18

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AS Assignment

Owner name: SMARTWATER RESEARCH LIMITED, UNITED KINGDOM

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CLEARY, MICHAEL;REEL/FRAME:029180/0136

Effective date: 20121022

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION